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tailscale/types/persist/persist.go

74 lines
2.2 KiB
Go

// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package persist contains the Persist type.
package persist
import (
"fmt"
"tailscale.com/types/structs"
"tailscale.com/types/wgkey"
)
//go:generate go run tailscale.com/cmd/cloner -type=Persist -output=persist_clone.go
// Persist is the JSON type stored on disk on nodes to remember their
// settings between runs.
type Persist struct {
_ structs.Incomparable
// LegacyFrontendPrivateMachineKey is here temporarily
// (starting 2020-09-28) during migration of Windows users'
// machine keys from frontend storage to the backend. On the
// first LocalBackend.Start call, the backend will initialize
// the real (backend-owned) machine key from the frontend's
// provided value (if non-zero), picking a new random one if
// needed. This field should be considered read-only from GUI
// frontends. The real value should not be written back in
// this field, lest the frontend persist it to disk.
LegacyFrontendPrivateMachineKey wgkey.Private `json:"PrivateMachineKey"`
PrivateNodeKey wgkey.Private
OldPrivateNodeKey wgkey.Private // needed to request key rotation
Provider string
LoginName string
}
func (p *Persist) Equals(p2 *Persist) bool {
if p == nil && p2 == nil {
return true
}
if p == nil || p2 == nil {
return false
}
return p.LegacyFrontendPrivateMachineKey.Equal(p2.LegacyFrontendPrivateMachineKey) &&
p.PrivateNodeKey.Equal(p2.PrivateNodeKey) &&
p.OldPrivateNodeKey.Equal(p2.OldPrivateNodeKey) &&
p.Provider == p2.Provider &&
p.LoginName == p2.LoginName
}
func (p *Persist) Pretty() string {
var mk, ok, nk wgkey.Key
if !p.LegacyFrontendPrivateMachineKey.IsZero() {
mk = p.LegacyFrontendPrivateMachineKey.Public()
}
if !p.OldPrivateNodeKey.IsZero() {
ok = p.OldPrivateNodeKey.Public()
}
if !p.PrivateNodeKey.IsZero() {
nk = p.PrivateNodeKey.Public()
}
ss := func(k wgkey.Key) string {
if k.IsZero() {
return ""
}
return k.ShortString()
}
return fmt.Sprintf("Persist{lm=%v, o=%v, n=%v u=%#v}",
ss(mk), ss(ok), ss(nk), p.LoginName)
}